Preflop: KK is definitely too strong to fold here, and at the same time 4betting may potentially be overplay. But I don't like the idea of calling here because the other guy is getting super good odds to call with all sorts of pocket pairs and set mine against you.

I think a small 4b is your best option -> Make it $1.60 and stack off unless both of them shove preflop, then you have a tough decision on whether to call or fold.